[requires.io] dependency update

requires · requires · commit 5e752fc27147 · 2018-04-25T03:50:51.000+01:00
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,3 +1,3 @@
-pytest==3.5.0
+pytest==3.5.1
 pytest-cov==2.5.1
 hypothesis
